Latics secured their second clean sheet of summer at Gigg Lane on Saturday and seven players completed the full 90 minutes.
Penney told the club's official website: "We looked comfortable and in control but lack an end product.
"But I thought we were the better side and it was a game we could have won.
"Clean sheets are always welcome and the work ethic, especially closing down the opposition, was good."
Source: Team_Talk